CN209214706U - Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system - Google Patents
Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system Download PDFInfo
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- CN209214706U CN209214706U CN201822130378.XU CN201822130378U CN209214706U CN 209214706 U CN209214706 U CN 209214706U CN 201822130378 U CN201822130378 U CN 201822130378U CN 209214706 U CN209214706 U CN 209214706U
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- valve
- cold water
- sampling line
- leakage monitor
- hydrogen leakage
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Abstract
Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system, including sampling line, the sample tap of sampling line, which is connected to, to be determined at the top of cold water storage cistern, inlet valve, adjustable flow valve and hydrogen leakage monitor device are disposed with along airflow direction on sampling line, inlet valve is normally opened valve, and the outlet of sampling line is communicated with the atmosphere.The utility model structure is simple, is additionally arranged adjustable flow valve and safety valve on the basis of existing technology, and not only monitoring leakage hydrogen numerical value is more accurate, but also safety greatly improves.
Description
Technical field
The utility model belongs to Hydrogen Leakage for Hydrogen-cooled Generator detection technique field, and in particular to a kind of nitrogen charging positive pressure type inner cold water
Case hydrogen leakage monitor system.
Background technique
Generator stator cooling water case has closed type nitrogen charging to determine cold water storage cistern, this cisten mechanism, and existing hydrogen leakage monitor scheme is
A piece sampling line is installed from the top surface that nitrogen charging determines cold water storage cistern, hydrogen leakage monitor device or probe are arranged on sampling line, leak hydrogen
The gas outlet of monitoring device or probe connects a gas exhaust piping, and one outlet valve is arranged on gas exhaust piping, and outlet valve is normally closed
State.
In existing hydrogen leakage monitor scheme, it is long term seal state that nitrogen charging, which determines cold water storage cistern, and the hydrogen inside water tank will necessarily
Packing phenomenon is generated, and then density of hydrogen rises.When density of hydrogen signal is more than alarming value, unit can be run and generate shadow
It rings, staff need to open manually outlet valve and be exhausted at this time.At a rough estimate, it just needs within usually 2-4 days to be vented primary.
The live signal of the not hydrogen gas leakage of such hydrogen leakage monitor technology, hydrogen leakage monitor device or probe monitors, has
It may be that nitrogen charging determines the concentration signal after the generation accumulation of cold water storage cistern internal hydrogen, monitoring data inaccuracy；And maintenance personnel is manual
It opens outlet valve exhaust and also increases the maintenance of staff.
Therefore, it is necessary to the leakage hydrogen concentration measurements for determining cold water storage cistern for this nitrogen charging to be designed update.
Utility model content
The utility model in order to solve shortcoming in the prior art, provide a kind of structure is simple, monitoring data are accurate,
Reduce manually-operated nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system.
In order to solve the above technical problems, the utility model adopts the following technical solution: nitrogen charging positive pressure type inner cold water case leaks hydrogen
Monitoring system, including sampling line, the sample tap of sampling line, which is connected to, to be determined at the top of cold water storage cistern, along airflow direction on sampling line
It is disposed with inlet valve, adjustable flow valve and hydrogen leakage monitor device, inlet valve is normally opened valve, the outlet of sampling line and big
Gas connection.
It further include safety line, one end of safety line is connected to inlet valve and determines on the sampling line between cold water storage cistern,
The other end of safety line is connected on the sampling line of hydrogen leakage monitor device outlet side, be provided in safety line safety valve and
Outlet valve, outlet valve are normally opened valve.
Hydrogen leakage monitor bottom of device is provided with automatic blowdown valve.
By adopting the above technical scheme, flow control valve is set on sampling line, and it is 0.3- that flow control valve, which adjusts flow,
0.5SCFH, by sampling line, continuously about leakage hydrogen amount is 0.3 side daily, is not influenced in the case of normal nitrogen charging surely cold
Water tank operation under positive pressure.The detection numerical value that can guarantee hydrogen leakage monitor device in this way is the instant concentration for determining density of hydrogen in cold water storage cistern
Value, then, can obtain accumulative leakage hydrogen amount daily monthly by the time integral of instant concentration value.
Safety valve is added again, sets the unlatching value of safety valve to determine the pressure of cold water storage cistern, there are superpressures if determining cold water storage cistern
Risk can guarantee to determine cold water storage cistern safe operation by safety valve direct emission atmosphere.Safety valve is to apply under emergency rating,
Safety valve is not turned under normal circumstances.
Inlet valve and outlet valve are normally opened valve.When system maintenance, inlet valve and outlet valve can be closed.
In conclusion the utility model structure is simple, it is additionally arranged adjustable flow valve and safety on the basis of existing technology
Valve, not only monitoring leakage hydrogen numerical value is more accurate, but also safety greatly improves.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, the nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system of the utility model, including 1 He of sampling line
Safety line 2, the sample tap of sampling line 1, which is connected to, to be determined 3 top of cold water storage cistern, to set gradually on sampling line 1 along airflow direction
There are inlet valve 4, adjustable flow valve 5 and hydrogen leakage monitor device 6, inlet valve 4 is normally opened valve, the outlet of sampling line 1 and atmosphere
Connection.
One end of safety line 2 is connected to inlet valve 4 and determines on the sampling line 1 between cold water storage cistern 3, safety line 2
The other end is connected on the sampling line 1 of 6 outlet side of hydrogen leakage monitor device, and safety valve 7 and outlet valve are provided in safety line 2
8, outlet valve 8 is normally opened valve.
6 bottom of hydrogen leakage monitor device is provided with automatic blowdown valve 9.
By adopting the above technical scheme, flow control valve is set on sampling line 1, and it is 0.3- that flow control valve, which adjusts flow,
0.5SCFH, by sampling line 1, continuously about leakage hydrogen amount is 0.3 side daily, is not influenced in the case of normal nitrogen charging surely cold
3 operation under positive pressure of water tank.The detection numerical value that can guarantee hydrogen leakage monitor device 6 in this way is determine density of hydrogen in cold water storage cistern 3 instant
Then concentration value can obtain accumulative leakage hydrogen amount daily monthly by the time integral of instant concentration value.
Safety valve 7 is added again, sets the unlatching value of safety valve 7 to determine the pressure of cold water storage cistern 3, if determining the presence of cold water storage cistern 3
Superpressure risk can guarantee to determine the safe operation of cold water storage cistern 3 by 7 direct emission atmosphere of safety valve.
Inlet valve 4 and outlet valve 8 are normally opened valve.When system maintenance, inlet valve 4 and outlet valve 8 can be closed.
The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations
The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality
With the protection scope of new technique scheme.
Claims (3)
1. nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system, it is characterised in that: including sampling line, the sample tap of sampling line
It is connected to and determines at the top of cold water storage cistern, be disposed with inlet valve, adjustable flow valve and hydrogen leakage monitor along airflow direction on sampling line
Device, inlet valve are normally opened valve, and the outlet of sampling line is communicated with the atmosphere.
2. nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system according to claim 1, it is characterised in that: further include safety
Pipeline, one end of safety line are connected to inlet valve and determine on the sampling line between cold water storage cistern, and the other end of safety line connects
It connects on the sampling line of hydrogen leakage monitor device outlet side, safety valve and outlet valve is provided in safety line, outlet valve is normal
Valve opening door.
3. nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system according to claim 1 or 2, it is characterised in that: leakage hydrogen prison
It surveys bottom of device and is provided with automatic blowdown valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822130378.XU CN209214706U (en) | 2018-12-18 | 2018-12-18 | Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822130378.XU CN209214706U (en) | 2018-12-18 | 2018-12-18 | Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209214706U true CN209214706U (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822130378.XU Active CN209214706U (en) | 2018-12-18 | 2018-12-18 | Nitrogen charging positive pressure type inner cold water case hydrogen leakage monitor system |
Country Status (1)
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| CN (1) | CN209214706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839339A (en) * | 2022-04-22 | 2022-08-02 | 刘忠 | Method and system for monitoring hydrogen leakage amount of generator fixed cold water |
-
2018
- 2018-12-18 CN CN201822130378.XU patent/CN209214706U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839339A (en) * | 2022-04-22 | 2022-08-02 | 刘忠 | Method and system for monitoring hydrogen leakage amount of generator fixed cold water |
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